The versatile Airush Core Foil range introduces a collection of foils and boards that take you on a journey through freeride, carving and beyond. A modular system that is easy to setup, and enable you to customize and trim your ride as you advance.

Our goal is to have a hassle free foil design.
After many months of testing and different feedback, it was safer and secure with 3 bolts fixed to the fuselage and plate than 2 bolt option.
2 is probably enough but we found that 3 is more secure at both connection points to prevent broken or twisting of the foil.

As you can see in the video, I do give these foils a beating during the testing processes and I am confident in their durability and strength.

Our mast is 14mm in thickness. This thickness is a very good balance between the mast performance (less drag) and stiffness, especially with different mast lengths.

To be honest, I have a problem with reviews. Most of them essentially boil down to "I took the gadget for a spin and had some fun". I'm sorry, but this is not a test. Even clever and funny reviewers like Kitefinder.com fall into this trap. Witness their foil "review": "We tested this high AR wing and it wants to go fast".

An informative test would be measuring flex and torsion numbers. This way you can prove that 3 bolt design doesn't sacrifice the rigidity.

To be honest, I have a problem with reviews. Most of them essentially boil down to "I took the gadget for a spin and had some fun". I'm sorry, but this is not a test. Even clever and funny reviewers like Kitefinder.com fall into this trap. Witness their foil "review": "We tested this high AR wing and it wants to go fast".

An informative test would be measuring flex and torsion numbers. This way you can prove that 3 bolt design doesn't sacrifice the rigidity.

I like scientific measurement more than most, but a foil (or a kite, or a board) can't be compared on measurable values. So much of it has to do with the way it feels for the rider due to unmeasurable qualities.

Your idea that three bolts makes the connection less rigid doesn't make sense to me. Are you talking about torsion? How can moving the bolts further out from the center decrease torsional rigidity?

Your idea that three bolts makes the connection less rigid doesn't make sense to me. Are you talking about torsion? How can moving the bolts further out from the center decrease torsional rigidity?

Because it is not the connection point that flexes the most? I assume that if the mast plate has a collar, then it it the whole mast flex that matters. What mast profile design element affects the flex/torsion the most? The spars:

In 2-bolt design there are 4 spars:

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and you may argue that in 3-bolt one there are 4 as well, although two of them are too close to the leading and trailing edge to have the same effect. This is why I expect less flex and torsion resistance; not exactly two times less as I claimed earlier, but still less.